GE TruSat - System Board Test Points; System Board Connectors; ID Connector (X1); Comwheel Connector (X2)

Troubleshooting
3–5
System board test points
Test point Signal name Description
E44 GND Non-isolated/chassis ground
E45 GNDF Isolated ground
E60 GND Non-isolated/chassis ground
System board connectors
ID connector (X1)
Pin # Signal Name I/O Description
1,2 Alternate board
configuration B
A A jumper across these two pins will identify a
different board configuration
3,4 Alternate board
configuration C
A A jumper across these two pins will identify a
different board configuration
ComWheel connector (X2)
Pin # Signal Name I/O Description
1 GND GND Non-isolated ground
2 GND GND Non-isolated ground
3 CW_PB+ I COM wheel push button signal
4 CW_OUTB I Phase B ComWheel input signal
5 CW_OUTA I Phase A ComWheel input signal
6 CW_VCC O Modulated ComWheel power
Speaker connector (X4)
Pin # Signal Name I/O Description
1 SPEAKER+ I Differential positive speaker signal
2 SPEAKER– O Differential negative speaker signal